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  <title>handle_matcher (Spec::Expectations::NegativeExpectationMatcherHandler)</title>
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  <pre><span class="ruby-comment cmt"># File vendor\plugins\rspec/lib/spec/expectations/handler.rb, line 24</span>
        <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">handle_matcher</span>(<span class="ruby-identifier">actual</span>, <span class="ruby-identifier">matcher</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">block</span>)
          <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">matcher</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-identifier">:negative_failure_message</span>)
            <span class="ruby-constant">Spec</span><span class="ruby-operator">::</span><span class="ruby-constant">Expectations</span>.<span class="ruby-identifier">fail_with</span>(
<span class="ruby-value str">&quot;Matcher does not support should_not.\nSee Spec::Matchers for more information\nabout matchers.\n&quot;</span>
)
          <span class="ruby-keyword kw">end</span>
          <span class="ruby-identifier">match</span> = <span class="ruby-identifier">matcher</span>.<span class="ruby-identifier">matches?</span>(<span class="ruby-identifier">actual</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">block</span>)
          <span class="ruby-operator">::</span><span class="ruby-constant">Spec</span><span class="ruby-operator">::</span><span class="ruby-constant">Matchers</span>.<span class="ruby-identifier">generated_description</span> = <span class="ruby-node">&quot;should not #{describe(matcher)}&quot;</span>
          <span class="ruby-constant">Spec</span><span class="ruby-operator">::</span><span class="ruby-constant">Expectations</span>.<span class="ruby-identifier">fail_with</span>(<span class="ruby-identifier">matcher</span>.<span class="ruby-identifier">negative_failure_message</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">match</span>
        <span class="ruby-keyword kw">end</span></pre>
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